THE NEW MONGOLIA one point we passed an almost perfect square formed on the ground by the bones of camels. Within the square were tattered remnants of tents and rusty cooking utensils. We knew the story of that gruesome geometrical design. The previous spring a big camel caravan started from Kalgan for Urga. When they were in the heart of the desert the weather unexpectedly turned and the caravan suddenly found itself in a terrific blizzard. The travellers formed the camels into a square, made a protective outer square with all the goods and luggage they were carrying, and built several tents in the centre. A few days after they were believed to have reached this spot the caravan was discovered under the snow; both men and camels had been frozen to death* The human remains were taken back to China, but the square of dead camels was left to decay in the desert. In this region the Gobi Desert is entirely barren but for a few tamarisk bushes which somehow manage to eke out a stunted existence. However., it is quite clear that in a former geological age the Gobi must have been a fertile land with rich vegeta- tion, for every now and then we came across petrified tree-trunks in which the rings were still discernible, The exit from the desert led through a terrible canyon that somehow made me feel as though I were temporarily buried alive. The bottom of the canyon was so narrow that there was barely room for the car to pass, the rock walls on both sides rising sheer, so that only a narrow strip of sky was visible. Here, too, many a caravan has met with disaster, when [272]